A new Peabody study of the Tennessee Voluntary Pre-K program reports that pre-K works, but the gains are not sustained through the third grade.
对田纳西州志愿学前教育项目的一项皮博迪新研究报告称，学前教育是有效的，但这种效果不会持续到三年级。
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Adverse outcomes, defined as death, sustained ventricular tachycardia (VT), and increase in New York Heart Association functional class to grade II or IV, occurred in 21% of patients.